Drier



E. B. AYRES.

nmER. lAPPLICATION FILED SEPT. 23, 1919 1,388,790, Patented Allg. 23, 1921 2 SHEETS-SHEET l. e :i: lq

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E. B. AYRES.

DRIER.

APPLICATION FILED SEPT. 23. 1919.

1,388,790. Patented Aug. 2s, 1921.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

ELWOOD .`B. AYRES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PHILA- DELPHIA TEXTILE MACHINERY'COMPANY, 0F PHILADELPHIA, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

DRIER.

Specification of Letters Patent.

Patented Aug. 23, 1921.

Application filed September 23, 1919. Serial No. 825,714.

To all whom t may concern:

Be it known that I, ELwooD B. AYREs, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Driers, of which the following is a specification.

My invention relates to certain improvements in driers, especially adapted for drying skins, and like objects which have tobe fastened to a board or a frame, and which are carried through the drying chamber at a given speedso that the skins will be dried when they leave the machine.

One object of the invention is to provide a machine in which detachable boards can be readily mounted in position and located in the carriers of the machine. A

A further object of the invention is Vto provide a drier in which one set of boards travels through the machine in one direction and another set of boards travels through the machine in the opposite direction.

The invention also relates to certain details which will be fully described hereinafter.

In the accompanying drawings:

Figure 1 is a side view illustrating my invention Fig. 2 is a plan lView;

Fig. 3 is an enlarged end view.;

Fig. 4; is an enlarged side view of one end of the drier;

Fig. 5 is a perspective view illustratin the construction of the frame and' the means for holding the boards; and

Fig. 6 is a view'illustrating a modification.

1 is a casing having two chambers 2, 2", separated, in the present instance, b f a heating chamber 3, in which are coils o ipe, or other suitable heating devices. irectly above the heating chamber is'l a circulating chamber 4. There is an opening in the partition between the two chambers and in this opening are the circulating fans 5 driven in any sultable manner. There are the usual openings in the upperand lower portions of the vertical partitions 6 separating the central heating chamber from the drying chambers so that air will circulate freely through these several chambers.

7 7 are conveyer chains adapted to travel on rails 9 at each side ofthe drying chambers 2a, These chains pass around sprocket wheels 8, 8al at each end of the machine. The wheels 8 are mounted on a shaft driven from any suitable source of power, one set of chains traveling in one direction in one drying chamber, and the other traveling in the opposite direction. in the other drying chamber, F ig. 2. Pivotally mounted at 11, at each -end of the structure, is a frame 10, which is supported on rollers 12 so that it can be swung in front of one drying chamber, or the other, as desired.

13, 13 are the drying boards on which the skins are tacked, or otherwise secured. These boards may be plain boards, or may be made in accordance with the construction illustrated in the application for atent filed me even date herewith, erial No. 325,715, in which twoskins can be attached to each board, one on one side of the board and the other on the opposite side thereof.

Means are provided for stretching these are sockets 14 to receive'the pivot pins 15 projecting from the boards 13. The pivots are slightly above the center, as shown, so that the boards will remain in a vertical position, but can be readily turned to a horizontal position when it is desired to attach the skins to the boards, after the boards have been mounted in theframe.

It will be noticed that each frame has pins 16, one at each side of the pivots 15, and rods 17 arel pivoted to the frame l0 at 18 andare arranged to engage the pins 16 so as to hold the frame in a horizontal position, as illustrated in Figs. 3 and 5. Suitable doors may be provided for the drying chambers, if found desirable.

Where .drying boards 'are used of a size to close the openings in the drying chambers, then these boards prevent the heated air in circulation within, the chambers from escaping to any considerable extent at the ends of the dryingchambers.

The operation is as follows: The sklns to be dried. are tacked to one side of the board, when in the horizontal position, as shown in Fig. 3. The board is then turned on its pivot, so that the other surface of the board .,wlll lbe uppermost, after which another skin is attached to that side of the board. The board is then swung to the vertical position, as shown in Fig. 1, and the frame is turned `on its pivot so as to present the board to the feed end of the chamber 2. The mechanism is so arranged that the pivot of the board can be transferred onto the endless chain 7, which travels slowly through the drying chamber. By feeding one board after another into the chamber, the entire chamber is filled. These vertical boards are spaced a suhicient distance apart to allow the air to circulate freely through the spaces. The lengthof the chamber is such that the skin will be properl dried when it reaches the delivery end. t the d elivery end the board is transferred onto another pivoted frame 10, similar to that at the opposite end of the machine and the frame is moved to the cen-y tral position and the skins are-removed from the board and other skins secured thereto. The board may be detached and another board placed in position with other skins attached thereto. y The frame, with the skinstacked thereon, is moved in front of the chamber 2a and. is transferred to the conveyer 7 in this chamber` and traversed through the chamber in the same manner as the boards are traversed through the chamber 2.

lt will be seen that'by the use of a drying apparatus in which there are two drying chambers a number of boards, with the skins thereon, can be traversed in one direction, whilethe other boards can be traversed in thejopposite direction. The same pivoted frame that places a board in position at the feedj end of one chamber can be used to removethe board at the discharge end of the other chamber. l

I claim:

11. The combination of a drier having two drying chambers; means ,for circulating air through the chambers; a pivoted frame at one end of the drier arranged to darry boards on which skins, or other objects, are secured, and so arranged that it `can be swung in front of either drying chamber. i

2. The combination of a drier having two compartments; means for conveying material in each compartment; a pivoted frame at each end of the drier for carrying ma- `terialto be dried in aposition to transfer material -from the frame to the conveying means at one chamber and soarranged as to swing in position to receive dried material from the other chamber.

3. The combination of a drier having two longitudinal drying chambers' a heating chamber located between the diying cham-l bers; means for circulating air through the heating'chamber and the drying chambers;

conveyers inv each chamber, one conveyer `moving 'in one direction and the other in the4 'opposite direction; a frame pivoted in dried'from one chamber to the other.

a central position at each end of the drier and arranged to swing in front of either drying chamber so as to carry material to the feed' end of one -chamber and to receive material from the feed end of another chamber.

4. The combination of a drier having two longitudinal drying chambers; a heating chamber located between the drying chambers; a circulating chamber between the drying chambers; a series of fans causing a circulation of air through the several chambers; a conveyer chain at each side of each chamber; rails supporting the chains;l a series of boards carried by the chains through the drying chambers; means at each end of the conveyer for carrying boards into position at the feed end of one conveyer and to receive the boards from the discharge end of the other chamber.

, 5. The combination of a drier having two compartments; conveying means in each ccompartment, one travellng in one direction and the other traveling in the opposite direction, a pivoted frame arranged to swing in front of either compartment and having pivoted supports;,boards having pivot pinsl arranged to be mounted on said supports so that the boards can be transferred into one chamber and removed from the otherchamber.

6. The combination of a drier having two drying chambers; conveyers in each chamber, one conveyerv arranged to traverse material in one direction and the other conveyer arranged to traverse material inthe` opposite direction; a pivoted frame-at each end of the drier arranged to swing in position in line with either^drying chamber; 4drying boards detachably and pivotally mounted on the frame; means for holding theflboards in a horizontal osition in order to 'allow skins to be tacke thereon so that boards, with skins thereon, can be shifted intoposition? to be transferred to the #feed end of one drying chamber and the frame can beswung into position to receive boards from the discharge end of the other drying chamber.

7 The combination of a drier having two drying chambers; means for circulating air in said chambers; a conveyer in each drying chamber; 'and means, at one end of the drier, for transferring a carrier for Imaterial to be 8. The combination of a drier having two longitudinal drying chambers; means for circulating air in said chambers; a conveyer in each drying chamber, one conveyer traveling in one direction andthe other in the 125 o posite direction; and means, at each end o the drier, for transferring a carrler for ,material from one chamber to the other.

ELWOOD B, AYR'ES. 

